Archive for May, 2008

Powered by Irony

20th May 2008

Well, this whole comic series is bizarre. God is powered by irony.

Hymns With Subtitles

14th May 2008

If you’ve ever misheard a hymn lyric, then this is for you.

Printing QStrings in gdb

12th May 2008

I’m still learning the power of gdb. It’s an immensely useful tool for debugging programs (funny, that…).

Today I wanted to find out the contents of a QString. “print s”, where “s” is a QString, doesn’t do much for you, though. The data is stored as an array of ushorts inside a shared data member. But all I want is to print out the string as it would appear if I did “qDebug() << s”, for example.

Solution: head over to the kdesdk module, and into the scripts directory, where mountains of useful bits reside. The script you want is kde-devel-gdb.

Now copy this to your home directory and put the line “source ~/kde-devel-gdb” into your ~/.gdbinit file. Or, if you’re building KDE in the manner prescribed on techbase, you can just put “source /home/kde-devel/src/KDE/kdesdk/scripts/kde-devel-gdb” into your ~/.gdbinit file.

To use, check out “help user-defined”.  For example, to print a QString called s, type “printq4string s”.  Ta-da!

Follow That Star!

8th May 2008

Where is God?

6th May 2008